Симуляция Влияния Остаточных Напряжений И Параметров SLM-Технологии На Формирование Области Границ Изделия Из  Жаропрочного Никелевого Сплава Inconel 718

Adjamsky, Sergey; Kononenko, G. A.; Podolskyi, Rostislav

doi:10.34185/1991-7848.itmm.2020.01.001

itmm

2020

DOI: 10.34185/1991-7848.itmm.2020.01.001

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Симуляция Влияния Остаточных Напряжений И Параметров SLM-Технологии На Формирование Области Границ Изделия Из Жаропрочного Никелевого Сплава Inconel 718

Sergey Adjamsky¹,

G. A. Kononenko²,

Rostislav Podolskyi³

Abstract: Селективное лазерное плавление (SLM) – это технология аддитивного производства при которой с помощью лазера можно изготавливать детали со сложной геометрией и высокими механическими свойствами. Однако, оптимальные технологические параметры SLM-процесса для металлических материалов сложно предсказать. Представлены результаты универсальной и упрощенной модели для прогнозирования плотности энергии в области границ металлической детали из Inconel 718, для предотвращения отклонений в геометрии детали на основе соот… Show more

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Influence of SLM-process parameters on the formation of the boundaries of parts of heat-resistant nickel alloy Inconel 718

Adzhamskiy¹,

Kononenko²,

Podolskyi³

2021

Kosm. nauka tehnol.

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We consider the improvement is considered of the modes of selective laser melting technology based on the design model to reduce the level of residual stresses and prevent deviations in the geometry of the part. Simulation results are presented on a universal voxel structure and a simplified object to predict metal behavior depending on the specific energy density in the region of the boundaries of a metal part made of Inconel 718. An experiment was carried out to study the influence of different strategies and process modes on the curvature of parts as a result of the effect of residual stresses in order to minimize them. Printing was carried out on a 3-D printer "Alfa-150" (LLC "ALT Ukraine") at constant power (P, W) and distance between tracks (d, mm) in each zone (up-skin, down-skin, in - skin) with a change in the speed (V, mm / s) of the laser beam movement, as well as a different pattern of sample growth by 3-D printing with 67 degrees rotation of each new layer relative to the previous one. To identify defects and deviations from the original model to the solid (sample), metallographic analysis was performed using optical microscopy (Carl Zeiss AXIOVERT 200M). It was found that the simulation of printing processes, performed on the Magics platform by breaking the model into a voxel structure, allows an analytical assessment of stresses and strains. Analysis of the appearance of the prototypes showed that the best down-skin indicators are formed at a power of 80 W and a specific energy density (40 ... 38 J / mm3). By using the 67 degrees staggered printing strategy at the optimum specific energy density, it is possible to minimize the residual internal stresses leading to distortion of the product. In the future, the results can be supplemented by studies of the effect of residual stresses of compressive forces when exposed to a laser beam at constant applied power. Using a computational model that allows calculating the residual stresses during the deposition of the next layer, depending on the speed of the laser, the power and the distance between the applied tracks, it is possible to obtain high-precision parts with specified properties. The adaptation of the model, which allows us to obtain a quantitative estimate of the residual thermal stresses depending on the speed of movement and the laser power for the Inconel 718 heat-resistant alloy, has been carried out. Optimal modes have been determined to minimize these stresses and reduce the curvature of the part.

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Influence of SLM-process parameters on the formation of the boundaries of parts of heat-resistant nickel alloy Inconel 718

Adzhamskiy¹,

Kononenko²,

Podolskyi³

2021

Kosm. nauka tehnol.

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The Influence of the Main Parameters of the SLM Process on the Density of Volume Parts

Adzhamskyi,

Kononenko,

Podolskyi

et al. 2023

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SLM technology is gaining more and more distribution and application in many industries after it was possible to ensure a sufficiently high density of products. The technological parameters of the process significantly affect the quality of the products. Purpose: establishment of rational printing modes of volumetric samples, with a working thickness of the 316L powder layer of 40 microns to achieve a density of volumetric samples of 99.9%. Volumetric samples (10 × 10 × 3 mm) were produced on an Alfa-150 3D printer manufactured by ALT Ukraine LLC. Experimental manufacturing modes: power - 195 W, speed varied in the range of 800...900 mm/s with a step of 100 mm/s, distance between tracks – 0,08...0,11 mm with a step of 0,01 mm. Determination of the density of metal samples was carried out by the metallographic method on an optical microscope CarlZeiss AxioVert 200M mat. It was established that with the thickness of the applied layer of 40 μm metal powder of steel 316L, at a scanning speed of 800 mm/s and a distance between tracks of 0,08 mm during the production of volumetric samples using SLM technology, their density is 99,98%.

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Study of the Effect of Aging During Chemical and Thermal Treatment on the Structure and Properties of Steel 18хгт and 20х

Hryhorieva,

Karpova

2024

GoS

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The paper proposes a study of the effect of chemical and thermal treatment on the structure and properties of the grid of the agricultural separator made of 20X steel. As a comparative analogue of this steel, the grating of an agricultural separator made of 18ХГТ steel was used, from which test samples were made to determine the mechanical properties and microstructure. The data of the study allowed us to expand the understanding of the formation of the structural component and the influence of heat treatment parameters, namely cementation, on mechanical and operational properties.

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Симуляция Влияния Остаточных Напряжений И Параметров SLM-Технологии На Формирование Области Границ Изделия Из Жаропрочного Никелевого Сплава Inconel 718

Cited by 5 publications

References 0 publications

Influence of SLM-process parameters on the formation of the boundaries of parts of heat-resistant nickel alloy Inconel 718

Influence of SLM-process parameters on the formation of the boundaries of parts of heat-resistant nickel alloy Inconel 718

The Influence of the Main Parameters of the SLM Process on the Density of Volume Parts

Study of the Effect of Aging During Chemical and Thermal Treatment on the Structure and Properties of Steel 18хгт and 20х

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